A
amjad e
Guest
i have a pink gourami fish that has been in my 20 gallon tank for like 3 months. he has been very nice and to the other fish. i have 2 semi-transparent fish that are almost the same size as him and they even used to swim together. as of lately i changed my fish tank water used fungus clear and added some antibiotic for the pink gourami because he has 1 cloudy eye. and for some weird reason he is being aggressive to the 2 semi transparent fish. what should i do?